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Member "passwdqc-2.0.3/pwqgen.c" (23 Jun 2023, 1760 Bytes) of package /linux/privat/passwdqc-2.0.3.tar.gz:

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    1 /*
    2  * Copyright (c) 2008,2009 by Dmitry V. Levin
    3  * Copyright (c) 2016,2021 by Solar Designer
    4  * See LICENSE
    5  */
    6 
    7 #include <stdio.h>
    8 #include <stdlib.h>
    9 #include <string.h>
   10 
   11 #include "passwdqc.h"
   12 
   13 static void
   14 print_help(void)
   15 {
   16     puts("Generate quality controllable passphrase.\n"
   17         "\nUsage: pwqgen [options]\n"
   18         "\nValid options are:\n"
   19         "  random=N\n"
   20         "       set size of randomly-generated passphrase in bits;\n"
   21         "  config=FILE\n"
   22         "       load config FILE in passwdqc.conf format;\n"
   23         "  --version\n"
   24         "       print program version and exit;\n"
   25         "  -h or --help\n"
   26         "       print this help text and exit.");
   27 }
   28 
   29 int main(int argc, const char **argv)
   30 {
   31     passwdqc_params_t params;
   32     char *reason, *pass;
   33     int retval;
   34 
   35     if (argc > 1 && argv[1][0] == '-') {
   36         if (!strcmp("-h", argv[1]) || !strcmp("--help", argv[1])) {
   37             print_help();
   38             return 0;
   39         }
   40 
   41         if (!strcmp("--version", argv[1])) {
   42             printf("pwqgen version %s\n", PASSWDQC_VERSION);
   43             return 0;
   44         }
   45     }
   46 
   47     passwdqc_params_reset(&params);
   48     if (argc > 1 &&
   49         passwdqc_params_parse(&params, &reason, argc - 1, argv + 1)) {
   50         fprintf(stderr, "pwqgen: %s\n",
   51             (reason ? reason : "Out of memory"));
   52         free(reason);
   53         return 1;
   54     }
   55 
   56     pass = passwdqc_random(&params.qc);
   57     passwdqc_params_free(&params);
   58     if (!pass) {
   59         fprintf(stderr, "pwqgen: Failed to generate a passphrase.\n"
   60             "This could happen for a number of reasons: you could have requested\n"
   61             "an impossible passphrase length, or the access to kernel random number\n"
   62             "pool could have failed.\n");
   63         return 1;
   64     }
   65 
   66     setvbuf(stdout, NULL, _IONBF, 0);
   67 
   68     retval = (puts(pass) >= 0 && fflush(stdout) == 0) ? 0 : 1;
   69 
   70     _passwdqc_memzero(pass, strlen(pass));
   71     free(pass);
   72 
   73     return retval;
   74 }